-use MWG - a comprehension question

[herb]

Hello Phil,

The option -use MWG loads the MWG-modul in order to work with MWG-tags.
Help text says:
... As a convenience, "-use MWG" is assumed if the "MWG" group is specified for any tag on the command line.

I did the following tests with a file that contains almost all MWG-tags:
exiftool -g0:1 -mwg:all <file with mwg-tags>
displays all MWG-tags.

exiftool -g0:1 -1mwg:all <file with mwg-tags>
displays no tags; I had also to give -use MWG as option to see also MWG-tags.

Now I have 2 questions:
Is the behaviour of 2nd command by design or should the MWG-modul also be loaded implicitly?

Is in case using command
exiftool -g0:1 -all:all --mwg:all <file>
the MWG-modul also loaded?

Thanks for your help in advance
Best regards
herb

[Phil Harvey]

Hi Herb,

Good point.  It probably should be loaded with -1mwg:all.  But I'm not sure what to do with --mwg:all.  Maybe it should be loaded here too?

Also note that it isn't curently loaded with options like -artist:mwg:all, but it should be.

- Phil

[Phil Harvey]

Hmmm.  Looking at the code I don't think it is worthwhile testing for all these cases.  I think I'll just mention in the docs that it is only loaded if the group name is "mwg" exactly for any requested tag.

- Phil

[herb]

Hello Phil,

thanks for your investigations and answers.

I think I'll just mention in the docs that it is only loaded if the group name is "mwg" exactly for any requested tag.

I fully agree; I asked these questions in order to know the exact state.


Additional note:

But I'm not sure what to do with --mwg:all.  Maybe it should be loaded here too?

I would not have agreed because --mwg:all reduces the number of tags.

Thanks again.
Best regards
herb

[Phil Harvey]

OK.  I'll leave it as is.  --mwg:all doesn't load the MWG module.  The documentation will state:

        As a convenience, "-use MWG" is assumed if the group name prefix starts with
        "MWG:" exactly for any requested tag.

- Phil